Patents Assigned to Microdot Inc.
  • Insert installation tool
    Patent number: 4752996
    Abstract: A tool for installing an externally threaded and keyed insert comprising a mandrel for the acceptance of an externally threaded insert. A cylindrical key-set sleeve is journaled on the mandrel and is movable axially thereof so as to bias the keys on the insert to the locked condition. An air chamber supports a piston that is movable upon the introduction of pressurized air into the air chamber to effect locking movement of the key-set sleeve.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: June 28, 1988
    Assignee: Microdot Inc.
    Inventors: Imre Berecz, Robert C. Prisco
  • Engine block plug
    Patent number: 4736865
    Abstract: An engine block plug having a cylindrical grommet provided with a radially extending flange, a central longitudinal radially inwardly tapering aperture with an internal circumferential groove and an insert having a radially inwardly tapering outer surface, a narrow end and a radially outwardly extending flange preassembled within the internal groove. The assembly is inserted into the block port and the insert is driven further into the grommet to expand the grommet to seal the engine block port.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: April 12, 1988
    Assignee: Microdot Inc.
    Inventor: Brian F. Rericha
  • Tool for setting plastic rivets
    Patent number: 4736507
    Abstract: A tool for forming a head on a plastic rivet while achieving and maintaining "draw up" of the elements to be conjugally secured thereby. The tool may be heated to facilitate head forming and to effect complete polymerization of a plastic rivet, such as a rivet comprising a "B" stage thermoset resin.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: April 12, 1988
    Assignee: Microdot Inc.
    Inventors: Imre Berecz, Dennis L. Hinton
  • Switch
    Patent number: 4733028
    Abstract: A low voltage switch having relatively long plunger travel that maximizes internal self-wiping of the contacts thereby to prolong switch life. The support for the internal contacts functions as a guide for the plunger as well as providing the necessary electrical spacing.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: March 22, 1988
    Assignee: Microdot Inc.
    Inventor: Dennis P. Flumignan
  • Gasket alignment insert
    Patent number: 4730836
    Abstract: An insert which ensures contiguity and proper alignment during installation of a plurality of gasket elements used to seal the joint between the mating surfaces of components comprising an internal combustion engine.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: March 15, 1988
    Assignee: Microdot Inc.
    Inventors: Paul H. Miller, Brian F. Rericha, Paul J. Stoeck
  • Valve stem oil deflector
    Patent number: 4730583
    Abstract: A molded thermoplastic valve stem oil deflector for an internal combustion engine comprises a two piece cup-shaped member having a skirt and a neck defined by two axially spaced radial flanges. The flanges have apertures therethrough defining a radially inwardly opening annulus for the acceptance of a conventional O-ring that seals on the valve stem and supports the oil deflector relative thereto.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: March 15, 1988
    Assignee: Microdot Inc.
    Inventor: Bernard G. Stritzke
  • Composite core fastener
    Patent number: 4718801
    Abstract: A fastener comprises composite head and shank portions having an encapsulating metal sheath thereon that is electrically isolated from conductive fibers in the head and shank portions and from an exposed surface of the head portion.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: January 12, 1988
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • High pressure rotary shaft seal
    Patent number: 4717160
    Abstract: A seal assembly for a shaft comprises one or more annular sealing elements having an initial internal diameter larger than the diameter of the shaft. The elements are deformed by a pair of annular backup rings disposed on opposite sides thereof. The backup rings have opposed axially extending undulations therein for effecting axial deformation and radial contraction of the sealing elements upon advancement of the backup rings toward one another.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: January 5, 1988
    Assignee: Microdot Inc.
    Inventors: Gordon T. Zitting, Jay T. Duke
  • Hydrodynamic seal
    Patent number: 4705277
    Abstract: A polytetrafluoroethylene seal is provided with surface effect vanes that effect hydrodynamic pumping of oil upon rotation of a shaft about which the seal is disposed.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: November 10, 1987
    Assignee: Microdot Inc.
    Inventor: James A. Repella
  • Composite channel and plate nut assembly
    Patent number: 4695212
    Abstract: A composite channel and plate nut assembly comprises a U-shaped channel having a plurality of apertures in the web portion thereof immediately adjacent the flanges therein for the acceptance of a plurality of downwardly extending lugs on the plate nut whereby reaction forces are accepted directly by said channel flanges upon threading of a bolt into said nut.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: September 22, 1987
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Composite rivet with strippable mandrel
    Patent number: 4687397
    Abstract: A composite rivet comprises an integral mandrel having a collar telescoped thereabout for controlling radial deformation of a head forming portion thereof.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: August 18, 1987
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Composite rivet with deformable plastic locking ring
    Patent number: 4687394
    Abstract: A composite rivet comprises a preformed head portion, a shear portion, an integral mandrel extending from said shear portion having an annular recess therein, a deformable plastic locking ring radially aligned with and filling the recess in said mandrel, and a collar telescoped about and radially aligned with said locking ring for controlling deformation thereof.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: August 18, 1987
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Composite rivet with deformable annular collar containing randomly chopped fibers
    Patent number: 4687395
    Abstract: A composite rivet comprises a preformed head portion, a shear portion, an integral mandrel extending from said shear portion having an annular recess therein, a deformable plastic locking ring radially aligned with and filling the recess in said mandrel, and a collar telescoped about and radially aligned with said locking ring for controlling deformation thereof.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: August 18, 1987
    Assignee: Microdot Inc.
    Inventors: Imre Berecz, Dennis L. Hinton
  • One-piece composite rivet with deformable head portion and mandrel
    Patent number: 4687396
    Abstract: A composite rivet comprises an integral mandrel from which material is sheared to form a head on the blind side of a workpiece.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: August 18, 1987
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Composite rivet with collar reinforced with circumferential fibers
    Patent number: 4687398
    Abstract: A composite rivet comprising an axially compressible and radially expandable tubular plastic preform with a mandrel extending centrally thereof and a collar radially aligned with an annular recess in said mandrel for controlling radial deformation of the preform and locking of the mandrel in the rivet.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: August 18, 1987
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Encapsulated fastener
    Patent number: 4681497
    Abstract: An encapsulated metal bolt comprises a head portion having an encapsulating cap thereon with a plurality of conductive fibers therein electrically isolated from the head but electrically exposed to the surface of a complementary aperture.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: July 21, 1987
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Capped nut
    Patent number: 4669937
    Abstract: The disclosure relates to a wheel nut comprising a nut body having conventional wrenching flats that are sheathed in part by a stainless steel sheet metal cap. The cap covers one end of the nut body and extends down the wrenching flats thereof. The nut is provided with a plurality of axially extending weld nibs of unique configuration which permit the stainless steel cap to be welded to the nut body by conventional resistance welding techniques.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: June 2, 1987
    Assignee: Microdot Inc.
    Inventor: Sidney H. Feldman
  • Anti-extrusion seal with primary and secondary complementary elements
    Patent number: 4635945
    Abstract: A composite seal comprising a primary seal element and a secondary sealing element. The primary seal element is more readily deformable than the secondary seal element. Juxtaposed surfaces of the seal elements are configured to minimize extrusion of the primary seal element past the secondary seal element.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: January 13, 1987
    Assignee: Microdot Inc.
    Inventor: Gerald H. Beck
  • Electrical terminal
    Patent number: 4632483
    Abstract: An electrical connector is disclosed which is of the kind comprising a male tab insertable in a female clip. The female clip (3) has the general form of a hollow parallelepiped the bottom wall (5,6) of which comprises an elastically deformable tab portion (5) (9) engageable in an opening of corresponding male tab portion.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: December 30, 1986
    Assignee: Microdot Inc.
    Inventor: Pierre Verin
  • Socket
    Patent number: 4630877
    Abstract: A socket for the reception of a bulb comprising a housing having a grommet receptacle therein for the acceptance of a grommet in sealing relationship. An electrically conductive wire extends through the grommet for connection to an internal terminal strip of the housing. An integral latch on the housing biases the grommet into its receptacle in the housing and secures the grommet in position therein.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: December 23, 1986
    Assignee: Microdot Inc.
    Inventor: Marvin W. Moore